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by lionkor 638 days ago
Just look at the proposal to add an --only-dependencies flag to cargo-build.

https://github.com/rust-lang/cargo/issues/2644

Its a clusterfuck of people misdirecting the discussion, the maintainers completely missing the point, and in the end its still not even been allowed to start.

Cargo can download-only, it cant build only dependencies. If you, for whatever reason (ignoring the misleading docker examples) want to build your dependencies separately from your main project build, you are sol unless you want to use a third party dependency to do so.